Vulnerability Name:

CVE-2016-2850 (CCN-113801)

Assigned:2015-03-23
Published:2015-03-23
Updated:2017-07-01
Summary:Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-20
Vulnerability Consequences:Bypass Security
References:Source: CONFIRM
Type: Vendor Advisory
http://botan.randombit.net/security.html

Source: MITRE
Type: CNA
CVE-2016-2850

Source: FEDORA
Type: UNKNOWN
FEDORA-2016-a545f81683

Source: MLIST
Type: Vendor Advisory
[botan-devel] 20160321 Botan 1.11.29 released

Source: CCN
Type: Botan Web site
Botan

Source: XF
Type: UNKNOWN
botan-cve20162850-sec-bypass(113801)

Source: GENTOO
Type: UNKNOWN
GLSA-201701-23

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-2850

Vulnerable Configuration:Configuration 1:
  • cpe:/o:fedoraproject:fedora:24:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:botan_project:botan:1.11.0:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.1:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.2:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.3:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.4:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.5:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.6:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.7:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.8:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.9:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.10:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.11:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.12:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.13:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.14:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.15:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.16:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.17:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.18:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.19:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.20:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.21:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.22:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.23:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.24:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.25:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.26:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.27:*:*:*:*:*:*:*
  • OR cpe:/a:botan_project:botan:1.11.28:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:botan_project:botan:1.11.28:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.precise:def:20162850000
    V
    		CVE-2016-2850 on Ubuntu 12.04 LTS (precise) - medium.
    2016-05-13
    oval:com.ubuntu.trusty:def:20162850000
    V
    		CVE-2016-2850 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-05-13
    oval:com.ubuntu.xenial:def:20162850000
    V
    		CVE-2016-2850 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-05-13
    oval:com.ubuntu.xenial:def:201628500000000
    V
    		CVE-2016-2850 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-05-13
    BACK
    fedoraproject fedora 24
    botan_project botan 1.11.0
    botan_project botan 1.11.1
    botan_project botan 1.11.2
    botan_project botan 1.11.3
    botan_project botan 1.11.4
    botan_project botan 1.11.5
    botan_project botan 1.11.6
    botan_project botan 1.11.7
    botan_project botan 1.11.8
    botan_project botan 1.11.9
    botan_project botan 1.11.10
    botan_project botan 1.11.11
    botan_project botan 1.11.12
    botan_project botan 1.11.13
    botan_project botan 1.11.14
    botan_project botan 1.11.15
    botan_project botan 1.11.16
    botan_project botan 1.11.17
    botan_project botan 1.11.18
    botan_project botan 1.11.19
    botan_project botan 1.11.20
    botan_project botan 1.11.21
    botan_project botan 1.11.22
    botan_project botan 1.11.23
    botan_project botan 1.11.24
    botan_project botan 1.11.25
    botan_project botan 1.11.26
    botan_project botan 1.11.27
    botan_project botan 1.11.28
    botan_project botan 1.11.28